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Anorectal malignant melanoma, a diagnostic challenge. 2023

Miguel Soler Góngora, and Fernando Berdugo Hurtado, and Javier Luis López Hidalgo, and Francisco Javier García Verdejo
Aparato Digestivo, Hospital Universitario Clínico San Cecilio , España.

Malignant anorectal melanoma is an extremely rare cause of rectal neoplasia, accounting for less than 1% of all melanomas and about 4% of all malignant colorectal neoplasms. We present the endoscopic and pathological images of a case in our clinical practice.

UI MeSH Term Description Entries
D008545 Melanoma A malignant neoplasm derived from cells that are capable of forming melanin, which may occur in the skin of any part of the body, in the eye, or, rarely, in the mucous membranes of the genitalia, anus, oral cavity, or other sites. It occurs mostly in adults and may originate de novo or from a pigmented nevus or malignant lentigo. Melanomas frequently metastasize widely, and the regional lymph nodes, liver, lungs, and brain are likely to be involved. The incidence of malignant skin melanomas is rising rapidly in all parts of the world. (Stedman, 25th ed; from Rook et al., Textbook of Dermatology, 4th ed, p2445) Malignant Melanoma,Malignant Melanomas,Melanoma, Malignant,Melanomas,Melanomas, Malignant
D012004 Rectal Neoplasms Tumors or cancer of the RECTUM. Cancer of Rectum,Rectal Cancer,Rectal Tumors,Cancer of the Rectum,Neoplasms, Rectal,Rectum Cancer,Rectum Neoplasms,Cancer, Rectal,Cancer, Rectum,Neoplasm, Rectal,Neoplasm, Rectum,Rectal Cancers,Rectal Neoplasm,Rectal Tumor,Rectum Cancers,Rectum Neoplasm,Tumor, Rectal
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000096142 Melanoma, Cutaneous Malignant A primary melanoma that originates from atypical skin MELANOCYTES, especially from acquired and congenital MELANOCYTIC NEVI, and DYSPLASTIC NEVI. FAMMM Syndrome,Familial Atypical Mole-Malignant Melanoma Syndrome,Dysplastic Nevus Syndrome, Hereditary,Melanoma, Familial,Cutaneous Malignant Melanoma,Cutaneous Malignant Melanomas,FAMMM Syndromes,Familial Atypical Mole Malignant Melanoma Syndrome,Familial Melanoma,Familial Melanomas,Malignant Melanoma, Cutaneous,Malignant Melanomas, Cutaneous,Melanomas, Cutaneous Malignant,Melanomas, Familial,Syndrome, FAMMM,Syndromes, FAMMM
D001005 Anus Neoplasms Tumors or cancer of the ANAL CANAL. Anal Cancer,Cancer of Anus,Anal Neoplasms,Cancer of the Anus,Neoplasms, Anal,Neoplasms, Anus,Anal Cancers,Anal Neoplasm,Anus Cancer,Anus Cancers,Anus Neoplasm,Cancer, Anal,Cancers, Anal,Neoplasm, Anal,Neoplasm, Anus
D012878 Skin Neoplasms Tumors or cancer of the SKIN. Cancer of Skin,Skin Cancer,Cancer of the Skin,Neoplasms, Skin,Cancer, Skin,Cancers, Skin,Neoplasm, Skin,Skin Cancers,Skin Neoplasm

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